Admittedly not much on the technical side beyond new languages constructs etc, but the main benefit would be ending for good the wrong argument "Pascal is old therefore Lazarus sucks".
Like 20 years ago I've written network code in Delphi that would send and receive binary data between different endianess and word size machines, so I had to align them and manage data down to bitfields in the Pascal equivalent of C unions, that is, the language offers enough bullets and rope to hang then shoot oneself in the foot just like C, but every time I talked with someone about Delphi and later Lazarus, it was just about a matter of minutes before the inevitable "yeah, but Pascal is old".
