The problem with UBBDev is that every time you upgrade, once again, you have to re add all those modifications back into the UBB and hope they will still work.
I for one would stop using UBB if the only way to get blogs in the site is to have to keep adding in the modifications every upgrade and hope it will still work. The first time it wouldn't work is the last time I would ever upgrade and would be looking into a new system pay or free the next day.
I'm referring to hacks such as Blogs or something very complicated in that matter. Some communities need certain thing and others do not, It would be nice to at least have the option to use something or turn it off rather then not have that ability at all and have to keep hacking the software to have the site features your site would require.
