I really like to see the pdga getting on board with the dgpt in their early scheduling on these events. Making them all A tiers is great too as last year it was funny to see every pro at B tiered pro tour events while no big names were at A tiers the same weekend. It seems, whether they like it or not, the pdga has conceded that working with the pro tour to strengthen the "top tier" tour schedule, making it sensible and inclusive to all parties, is the best direction. Its a shame they couldn't have taken this stance from jump street without forcing two seasons of the pro tour without their full backing (make em prove themselves I guess), but better late than never.
sjberry hit on the primary reason they didn't jump in with full support early on...despite Dodge's reputation with the Vibram Open, it's not as though he had a track record of running an entire series. So the hesitance to be overtly cooperative the first year is understandable.
But there was 100% open cooperation last year in setting this year's schedule (which was remarkable seeing how close Dodge came to burning some bridges during the whole Bradley Williams debacle). The 2017 NT/DGPT/DGWT/Major schedule was as geographically coordinated as anything we've seen since the start of the NT (with the one major exception of the BSF->Worlds cross-country thing). And the PDGA has been more than supportive of the Pro Tour this year with articles and promotion on the PDGA site/social media (and perhaps occasionally on the ground support via Gregwah and Downes). That's something they don't typically provide A-tiers at all.
There was also a very good reason that some of the DGPT events this year were B-tiers...they'd never been PDGA sanctioned before. Nobody gets to jump onto the A-tier schedule out of the blue, even if they're backed by the DGPT or maybe have a decent track record as an unsanctioned event. Now those events have proved themselves as PDGA events, they're allowed to upgrade to A-tier status for 2018.
The PDGA has its processes and standards to uphold. They shouldn't be expected to bend or break those for anyone, including the DGPT.