One thing I think even the WP will not do is they will not go into a place where the opposition is the incumbent. For example a Potong Pasir seat when CST was still around. Unless they are even more arrogant than I give them credit for.
I remember WP wouldn't even sell newspapers in Potong Pasir and after 2006 they gave up Bishan Toa Payoh to SPP after Chiam told them he wanted to contest BTP in 2011 (which turned out to be true). Even SDP is savvy enough to know that Hougang and Punggol East was different.
Based on your definition, the arrogant ones will be people like Goh Meng Seng, who makes no such differentiation between an opposition ward and a PAP ward, and Tan Jee Say who wanted to contest Hougang.
But what I find really disturbing is, even at this stage, even before the WP is truly established, it wants to be special and distinct. That is very curious. People have long memories.
Every party has wanted to be distinct, even those with no seats. PAP, SDP, NSP, RP etc. You name it you have it. You should be disturbed by all parties or Singapore politics in that case.
There are two interpretations. One of them is that WP is looking at other parties and wondering, "you guys operate like clowns. When are you going to get your shit together? Maybe one day when you're operating on the same level as us, we can be friends." Another less benign interpretation is they simply think they don't need anybody else, not now, not ever.
The absent argument so far is that political alliances tend to be between a majority party and minority party(s). For example, UMNO-MCA-MIC. Or a major party like BJP and regional parties.
In any alliance, WP has to be the majority one at this stage. How is WP to form an alliance when all the existing opposition parties say, "No, we are not going to be the minority party".
It's true WP has no interest allying with another party at this stage, but I don't think there is any existing party willing to be a minor or fiddle to WP.
Because when the PAP goes below one half of the seats, what's most likely to happen is that the WP will also have less than 50% of the seats, and people will want to look for a coalition partner. And maybe the third party (maybe SDP or SPP or NSP or whatever) will just partner the PAP because they buisong the treatment they had at the hands of WP all these years. And then WP will just have to suck thumbs and continue to excel at being a good opposition party like they've always been.
It is not necessarily good or bad to be a coalition partner to the PAP or remain as an opposition to the PAP, so I don't understand what this comparison is about.