Could you share tips on whats next after hitting MOP for BTO? what would make you switch and what kind of property to switch to?

Depending on your financial situation and family situation.

If you want a bigger/smaller space, if you want condo, if you want to live in another estate... then consider selling at 5 year mark and get a resale or condo.

If you go for another BTO or EC and still need to wait for it to be built, essentially not really selling right after MOP.

Most people would upgrade to a condo which I find a financial mistake if you are looking at it from an investment point of view. But if its for stay and "better" living conditions with comfort, convenience, status etc. then go for it.

Personally, I would look towards moving into a 5 rm HDB (assuming you're currently on 3/4) especially if you have are expecting children. Executive Masionettes are pretty good too if you can find one at a good value for the space. There's en bloc potential since those houses tend to be older and underutilised in terms of space which could be redeveloped. (ie. can be rebuilt higher to house more families) ​​​